ASYMMETRICAL MODULATION
\ˌe͡ɪsɪmˈɛtɹɪkə͡l mˌɒdjʊlˈe͡ɪʃən], \ˌeɪsɪmˈɛtɹɪkəl mˌɒdjʊlˈeɪʃən], \ˌeɪ_s_ɪ_m_ˈɛ_t_ɹ_ɪ_k_əl m_ˌɒ_d_j_ʊ_l_ˈeɪ_ʃ_ə_n]\
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A scheme to maximise use of a communicationsline by giving a larger share of the bandwidth to themodem at the end which is transmitting the most information.Only one end of the connection has full bandwidth, the otherhas only a fraction of the bandwidth. Normally, which endgets the full bandwidth is chosen dynamically.Asymmetrical modulation was made famous by the HST mode ofthe early high-speed modems from US Robotics.
By Denis Howe
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Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.